2nd one would be very 'kewl'. But there is the "BITCOIN" issue.
We need a payment service because no bigger company (such as Microsoft or Dell etc..) is accepting Bitcoin directly.
They're all using BitPay or similar services to get their money instantly.
From the view of the companies BitPay is the same as PayPal. They have no idea what's behind - main thing: money flows.

If we wanna do that, we need the following:
Exclusive Payment Service (like coinpayments.net, but for "Zeit only")
Rebranding (uberPAY®, rayPAL™ )
5-10 developers
some real money investment or a crowdfunding

First link I will check later.

Cheers,
Ray